Segfaults can occur when a mandatory argument is not provided to "demo hello" and "demo status". Eg:

=> demo hello Segmentation fault (core dumped)

Add a check to ensure all required arguments are provided.

Signed-off-by: Peter Tyser ptyser@xes-inc.com --- common/cmd_demo.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/common/cmd_demo.c b/common/cmd_demo.c index 652c61c..b8b8578 100644 --- a/common/cmd_demo.c +++ b/common/cmd_demo.c @@ -76,7 +76,9 @@ static int do_demo(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) ARRAY_SIZE(demo_commands)); argc -= 2; argv += 2; - if (!demo_cmd || argc > demo_cmd->maxargs) + + if ((!demo_cmd || argc > demo_cmd->maxargs) || + ((demo_cmd->name[0] != 'l') && (argc < 1))) return CMD_RET_USAGE;

if (argc) {